Dwyer EDA Serise MERCOID Electronic Pressure Controller Instruction Manual
FEATURES/BENEFITS
- Can replace separate gages, two switches and a transmitter in a system saving money, installation time, and panel space with its versatile and compact functionality
- Meets simple and complex application needs with fully programmable software
- Easily test switch and transmitter output function through the test mode that simulates input over the range without pressuring the system
- Protection in case of sensor failure, over pressure, high temperature limit, low temperature limit, or keypad short with failsafe relay output choices
- Even wear on duplex pump applications via selectable alternation of the set points between relays
- Ideal for a wide variety of applications with panel mount,flush mount, or pipe mount ability due to its rugged weatherproof housing
- Eliminate the need of a step down transformer with the -HV 120/240 VAC power option
APPLICATIONS
- Process control
- Compressor control
- Filter status
- Duct or building static pressure
- Damper and fan control
DESCRIPTION
Series EDA Electronic Pressure Control is an extremely versatile compact package that can replace a separate gage, two switches, and a transmitter in a system saving money, installation time, and panel space. The EDA incorporates two SPDT relays that have the on and off points fully adjustable over the range for control or alarm use. Front face has LED indicators for switch status and a large backlight two line display showing process value and indication units. Programming is easy with simple menu structure, two-line display, and external programming buttons. Weatherproof housing is ideal for a wide variety of applications with panel mount, flush mount, or pipe mount ability.
SPECIFICATIONS
| Service | Compatible liquids and gases. |
| Wetted Materials | 316L SS. |
| Housing | Glass filled plastic. |
| Accuracy | ±1% of FS including linearity, hysteresis, and repeatability (indicator and transmitter). |
| Stability | < ±2% of FS per year. |
| Pressure Limits | 1.5 x range. |
| Temperature Limits | Ambient: 20 to 140°F (-6.6 to 60°C); Process: 0 to 176°F (-18 to 80°C). |
| Compensated Temperature Limits | 32 to 122°F (0 to 50°C). |
| Thermal Effect | ±0.05% of F.S./°F. |
| Display | 4-digit backlit LCD (Digits: 0.60˝ H x 0.33˝ W). |
| Power Requirements | 12-28 VDC/AC 50/60 Hz. (Can work at 8 VDC for 45 s). For T5 option: 14-30 VDC/AC 50/60 Hz. For -HV option: 120-240 VAC. |
| Power Consumption | 12-28 VDC/VAC: 2.5 watts; 120-240 VAC: 4.5 watts. |
| Electrical Connections | Removable terminal blocks with 1/2˝ female NPT conduit connections. |
| Enclosure Rating | Meets NEMA 4X (IP65). |
| Warm Up Time | <10 s. |
| Mounting Orientation | Any position. |
| Weight | 1.18 lb (535 g). |
| Agency Approvals | CE, UL. |
SWITCH SPECIFICATIONS
| Switch Type | 2 SPDT relays. |
| Electrical Rating | 5 A @ 120/240 VAC, 1 A @ 30 VDC. |
| Repeatability | ±1% of FS (switching only). |
| Set Points | Adjustable 0-100% of FS. |
| Switch Indication | External LED for each relay on the front panel. |
| Switch Reset | Manual or automatic. |
TRANSMITTER SPECIFICATIONS
| Output Signal | 4-20 mA, 1-6 VDC, 1-5 VDC, or 0-10 VDC (direct or reverse output selection). |
| Minimum Excitation | 14 VDC. |
| Zero and Span Adjustments | Menu scalable within the range. |
DIMENSIONS
WIRING DIAGRAM
HOW TO ORDER
Use the bold characters from the chart below to construct a product code.
ACCESSORIES
| Model | Description |
| A-590 A- DA-BRK | 1/2˝ conduit plug, watertight Flush mount bracket for EDA, bracket is then surface mounted, steel with gray hammertone epoxy finish |
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